LG ARNU423B8A4 User Manual

DUCTED INDOOR UNIT
ENGINEERING MANUAL
High Static Ducted
7,500 to 95,900 Btu/h
Low Static Ducted
7,500 to 24,000 Btu/h
Vertical / Horizontal Air Handler
12,000 to 54,000 Btu/h

LG ARNU423B8A4 Specifications

General

Brand	LG
Model	ARNU423B8A4
Category	Air Conditioner
Language	English

Summary

INTRODUCTION

Unit Nomenclature

Details the naming convention for LG Multi V indoor units, explaining model number structure.

Refrigerant Charge Worksheet

High Static Ducted Indoor Units

Covers mechanical, general, electrical data, dimensions, wiring, refrigerant flow, ESP, acoustic, and capacity details.

Low Static Ducted Indoor Units

Details mechanical, general, electrical data, dimensions, wiring, refrigerant flow, ESP, acoustic, and capacity information.

Vertical / Horizontal Air Handler Units

Provides specifications for vertical and horizontal air handler units, including mechanical, general, electrical, dimensions, and capacity data.

DUCTED HIGH STATIC

DUCTED LOW STATIC

Electrical Wiring Diagrams

Illustrates the internal wiring diagrams and terminal legends for L1 units.

VERTICAL / HORIZONTAL AIR HANDLER

Mechanical Specifications

Describes unit construction, fan assembly, controls, condensate handling, and coil details for air handlers.

General Data

Electrical Data

Electrical Wiring Diagram

Illustrates the wiring diagram and terminal legend for NJ frame Air Handler units.

Refrigerant Flow Diagrams

Capacity Tables

Lists cooling capacity data for ARNU123NJA4 under various indoor and outdoor temperature conditions.